Tool for channeling soles



ilN rrEo STATES FFTQEQ ALVIN ALLEN, OF NORTH BROUKFIELD, MASSACHUSETTS.

TOOL FOR. CHANNELING SOLES.

Specification forming part of Letters Patent No. htfi flfi, dated May 3, 1864.

do hereby declare that the following, taken in connection with the drawings which accoiniany and form part of this s 'iecitication, is a description of my invention suflicient to enable those skilled in the art to practice it.

In channeling soles or around and near the edges thereof for the receptionot' the stitches or seam by which the soles are secured to the vamps onasewingmachine it has been customary to first cut with straightedged knife an incision around and'tiarallel to the edge of the sole, and to the (lepth to which the channel is to be niade, and tlien'tof'run a tubular knife orplow through the bottom. of this incision to forin the channel. Each of these operations was distinct; and my invention consists iii-cutting both the incision or groove and the channel at'the bottom thereof at one manipulation by combining the'two knives in one holder or stock.

Myljnventmn is illustrated in the accompanying drawings, in which Figures 1 and 2 represent,respectively, front and side views of a holder with the two knives applied thereto. Figs. .3, 4, 5, and 6 represent a modification of the invention, the knives being there shown, respective y, in front, side, and edge views and in section. Figs. Tand Sdenote the form of the channel."

In carrying out my invention, as seen in Figs. 3,4, 5, and 6, the straight-edge knife a isforined on the bottom and as a part of the shank b, and the tubular knife 0 extends from the knife a, as shown. The knife to is set angular with respect to the shank b, and so thatin operating the instrument the groove from the surface of the sole to the channel is out diagonally or on a slant from said surface, as shown in Fig. 7. This forms a flap, d, above the channel '6, which, upon being rubbed up andback, as seen in Fig. 8, leaves the channel open to thetop of the'sole and the sole cutting a groove nel. adjusted with respect to each other and can: be at any tinge separately removed and sharpready for application to the vamp to which it is to be secured, the channel, after receiving the stitches, being again covered by the fiap (I, so as to conceal and protect the stitches.

In the instrument shown, Figsl'and 2. in-

stead of uniting in one piece of nietal thestraight and tubular knives fg, I make the knives separately and ,fasten their shanks in a stock or holder, h, by a plate, 1', or in any other suitable manner, the groover being set; so as to ru'n just in advance of the tubular knife or plow'p, and so that the groove shall run from the surt'ace'of the sole to the chan- Bythis arrangement the knives can be ened when it may be necessary. 7

The instrument shown in Figs. 3, 4, 5, and 6 is applied to a holdcrin a similar manner to that shown with the two knivesfg. The loottoin surface, I, of this holder regulates the depth of cut of thekni'ves, they being setat such distance out from said surface as it is do sira'ole to form the channel. Lips or guides k k extend down from the surface I (11 one side of the knives, said lips being keptagainst the edge .of the sole in using the knives and keeping'the channel and .groove parallel to or equidistant from said edge.

What I CltIlLD is' 1. Theemploynientofaclian-neling-knife and grooving-knife applied to a stock, to operate together substantially in-the manner and for the; purpose specified.

2. So applying the knives to the stock orv holder that they can be adjusted with respect to each other or separately removed for re pairs or other purpose, as set forth.

3. Constructing the stock or holder with the surface I and lips or guides h, whereby the depth of out 6f the channel and its distance from the ed ge of the sole is g'agethas set forth.

AhVINALLE-N. 

